With the Muscular system and the Skeleton system because it carries oxygen and nutrients to cellsthat are in the muscles and bones.
The Respiratory system because the blood takes the oxygen from the lungs and then the blood carry it around the body.
The Digestive system takes and process the food and nutrients and then the blood take it to carry around the body.
The blood brings dregs from cells to the Excreatory system to be expelled.
With the Nervous system too,because the brain has many cells and gives the order to the heart to pump blood.
The reproduction system needs the circulatory system because the baby needs to form correctly, and for that he needs enogh blood in the stomage of his mother.
how it works and which are the other systems :
With the Muscular system and the Skeleton system because it carries oxygen and nutrients to cellsthat are in the muscles and bones.
The Respiratory system because the blood takes the oxygen from the lungs and then the blood carry it around the body.
The Digestive system takes and process the food and nutrients and then the blood take it to carry around the body.
The blood brings dregs from cells to the Excreatory system to be expelled.
With the Nervous system too,because the brain has many cells and gives the order to the heart to pump blood.
The reproduction system needs the circulatory system because the baby needs to form correctly, and for that he needs enogh blood in the stomage of his mother.